Consolidated Balance Sheets - USD ($)	Dec. 31, 2020	Dec. 31, 2019
Current Assets:
Cash and cash equivalents	$ 2,833,000	$ 7,283,000
Accounts receivable, net of allowance for doubtful accounts of $37 and $45 at December 31, 2020 and 2019, respectively	3,356,000	3,780,000
Prepaid expenses and other current assets	914,000	1,306,000
Income tax receivable	2,495,000	482,000
Total Current Assets	9,598,000	12,851,000
Property and equipment:
Computer software	4,422,000	4,166,000
Office furniture and equipment	2,139,000	2,124,000
Laboratory equipment	15,978,000	16,195,000
Leasehold improvements	3,629,000	4,574,000
Property and equipment	26,168,000	27,059,000
Accumulated depreciation and amortization	(16,937,000)	(16,197,000)
Property and equipment, net	9,231,000	10,862,000
Other assets	888,000	943,000
Operating lease right-of-use assets	4,286,000	2,875,000
Total Assets	24,003,000	27,531,000
Current Liabilities:
Accounts payable	577,000	617,000
Accrued expenses	1,801,000	3,577,000
Current portion of long-term debt	688,000	678,000
Current portion of operating lease liabilities	875,000	963,000
Total Current Liabilities	3,941,000	5,835,000
Long-term debt	3,444,000	1,951,000
Deferred tax liabilities, long-term	211,000	550,000
Long-term portion of operating lease liabilities	3,895,000	2,375,000
Total Liabilities	11,491,000	10,711,000
Commitments and Contingencies (Note 9)
Shareholders' Equity:
Preferred stock, $0.005 par value, 873 shares authorized,no shares issued or outstanding
Common stock, $0.005 par value; 50,000 shares authorized 6,205 shares and 6,185 shares issued at December 31, 2020 and 2019, respectively, 5,537 shares outstanding and 5,517 shares outstanding at December 31, 2020 and 2019, respectively	31,000	31,000
Additional paid-in capital	32,803,000	32,249,000
Less - Treasury stock, at cost, 668 shares	(10,082,000)	(10,082,000)
Accumulated deficit	(8,606,000)	(3,754,000)
Accumulated other comprehensive loss	(1,634,000)	(1,624,000)
Total Shareholders' Equity	12,512,000	16,820,000
Total Liabilities and Shareholders' Equity	$ 24,003,000	$ 27,531,000